/*
 * Copyright (C) 2022 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once

#include "EventHub.h"

#include <cstdint>

namespace android {

/* Keeps track of the state of currently reported HID usage code. */
class HidUsageAccumulator {
public:
    explicit HidUsageAccumulator() = default;
    inline void reset() { *this = HidUsageAccumulator(); }

    void process(const RawEvent& rawEvent);

    /* This must be called when processing the `EV_KEY` event. Returns 0 if invalid. */
    int32_t consumeCurrentHidUsage();

private:
    int32_t mCurrentHidUsage{};
};

} // namespace android
